Prehistoric artists employed a wide variety of painting methods, using their fingers first and later pointed sticks, bone, pads of moss wrapped in hide or brushes made of animal hair, feathers or vegetable fibre. Ochre crayons were also used to apply pigment directly onto the surface. They also used spray painting techniques, by spitting out the mixed paint from their mouths and even using reeds or specially hollowed bones - saliva acts as a binder